p4raw-id: //depot/perl@15296
};
#define PERL_DEBUG_PAD(i) &(PL_debug_pad.pad[i])
-#define PERL_DEBUG_PAD_ZERO(i) (SvPVX(PERL_DEBUG_PAD(i))[0] = 0, SvCUR(PERL_DEBUG_PAD(i)) = 0, PERL_DEBUG_PAD(i))
+#define PERL_DEBUG_PAD_ZERO(i) (sv_setpvn(PERL_DEBUG_PAD(i), "", 0), PERL_DEBUG_PAD(i))
/* Enable variables which are pointers to functions */
typedef void (CPERLscope(*peep_t))(pTHX_ OP* o);